Thir callow young, but featherd soon and fledg. - from Paradise Lost by John Milton

2.

Eight callow infants fill'd the mossy nes. - from The Iliad of Homer by Homer

3.

High on poised pinions, threats their callow young. - from The Iliad of Homer by Homer

4.

This is what that charming Saint Francois de Sales calls somewhere "les pretres blancs-becs," callow priests. - from Les Miserables by Victor Hugo

5.

I was surrounded by the stale smut of clubmen, stories to disturb callow youth, ads for transparencies, truedup dice and bustpads, proprietary articles and why wear a truss with testimonial from ruptured gentleman. - from Ulysses by James Joyce